Soldering tool



Aug.14, 1923. y 1,464,933

G. HARPER 4 SOLDERING TOOL Filed Apri1 1o. 1922` J /fme /vf 01V, f M93?? `ToZZwhom;z5mayconcern) y y HARPER, asub Y. jectof the vKing of yvlilng'fland;Y residing at Hunt'ly, in the county of AAberdeen," cotfj i Patented Aug.- VVi4; `1923.v j

j u'NirEDf--s ria-.TEE

- ninucanbn 'md aprilie', weefsel-mijne. tiene? 1 Be it known that I, GEORGE land, have invented certain new` and useful .lmprovernents in Soldering Tools, otwhich i the Afollowing is a specification. I

`This invention relates fto Vsoldering tools, Y

and it has for itsobje'ctto providefan irnproved constructionlof soldering bit particularly adapted for performing the operationYV known as brogging, whichconsists 'ini the sealing up,V Vwith solder, ofthe vent holes in tins containing food and the like. The tool vent holes, as it enables this workto be done present invention a tool is constructed which may be employed for otherpurposes, but it is particularly applicablegfor sealing these quickly and accurately. without the use of highly skilled labour.

The operation ot tinning the rim of the hole and Yclosing v.the

aperture'with solder,- and this is generallyV etfected by twisting the bit or iron,v andy if the iron is too hot the'solder is liable tobe blown out of place before it chills. By the can be used by an unskilled workman and will be efectiveevenif the bitis excessively hot.' ff

lAccording to this invention, the shank of the vbit Vis connectedzwith the grip through a helical key connection suoli that when the bit is applied tothe work and the grip is pressed downwards the shank andbit are rotated Thus av slight touch and pressurek of the bit upon the tin causes the solder toy be' applied and sprear round very rapidly`V before there is time for theadjacent part ofA the tin to become heated. The deposited solder chills immediately and the vent VisV effectively sealed.` y A l The manner of carrying outfthe invention is illustrated in the accompanying ldrawings in Which- Figure lV is anelevation ofthe completef tool? 1 Figure 2 is an enlargedbviewo a part of Figure l shewn in section, Y

Figure 3' is anend view of Figure 2` asseen in the direction ofthe `arrow 3, the part B? being omitted, and

Figure 4f is a fragmentarysectional viewof a'modified part.-v Y

Like letters indicate like partsgthroughy out 'the drawings.

The shank A'of the tool is tubular and isl f SQ'LYDERINGf root." L c l ysistsv of al stern Bl? fittinginfthe clamp Caflyllls' 'e been @Opper-110s@ Betts@ were broggingV Y consists iny :Gnoitennnnrnnjor .Hniirnsg ,Aniiienniiivg-:soornnisine suitable typetoilreceiie. thebit, wh cb con-1 knownA type. `By'thisl arrangement different upon it a helical quick pitch. y l

The hand grip lits outside the shank, cenifprising Aavvooden exterior y D fixedv upon a nietal linen D?" which slidesfreely on the vprovided at one end with Va clamp)Av2 o l3 anyv Y .A

and;

Vsizes'of bits'niayV readily be employedV with'` the sa'nienniainfparts. ,.4 f jTh'e other fend orI4 the tubular shank is `closed by 'apl'vug Asand theexterior has cut groove or keywa'y C of a shank "This metalliner carriesa key engaging the helical grooye or keyway C, and i this is preferably constituted by a steel ball in a recessfDtin the liner. Preferably the ball Vis acted upon by asti' spring and (or) whichA engages a correspondinglyshaped groove in /the shanlrrand the ball is housedadjusting screw D4 to ensure it alwayskeep-V 'ing in engagement withthe groove.

`Above theplug` A3' closing the upper end' of the shank A is alight spring A4 which acts on the shank and lies in a deepl reandthe kbit B ycarried by it are'rotated one or more turns, according to the pitch of the helical groove C. y Y

Tn usingthetoolthe bit BY is tinnedand Aheated as usual,y andthen the acting end is, pressedV against the ventl to be sealed, the hand grip D being pushed along the shank. This causes the'shank and bit to twist one orV more revolutions to'spread out the solder', so thatthe work is ellectedquiekly and Vthe tooly cari` beremoved from thework belore it has time to` overheat the Lsurrounding nietal. Thus the solder chillsiminediately,

ico

and-the delicate operation otftwisting Vthe tool With the ingersfis not necessary. Consequently the brogging operationv can be effected by` unskilled workmenv` with little or no liability .of failures.

. As in some cases it inaylbe'desirable to heat the bit Brby lelectrical means, vin the known 'Inanner,` the p fragmentary sectionalview ofthe grip D in Figure 4 is provided ,to illustrateV theinanner in which electrical" Supply cables E can be mounted `Wi'tliout interference with the ineehenisn'i, The plug A et the inner end of the shank A is nmde hollow'and .is provided with u hollow ex: tension AG' which has :L sliding lit in an aperture VD7 in the outer end oi' the grip, so that is the latter is pressed toward the hit the extension A een project from it. 'llhrougghthe hollow exteneion the Cables l are lef. from the current-Source Clown the hollow stem' :and thence to the hit B, the olf their connection with the latter no port of the presentimention. ier E is suitably inodied ne at D3 to provide :L central :aperture through which thoextension A een freely slide.

niet l tieiin oe inf invention and desire 'to fic-eure by Lettere faten't of the United States ie Y f o l. A soldering); tool comprising in Combi# riz-tion with hollow7 actuating' handle, 2L tubular shari adapted-to slide in the handle heel; and; forth and roviiletl on its eX- teor with :L helical groove, means in Said handle tending` to move the Seid shank out- Wards, a. clamp at the outer end of Said shank for receiving ulldholcling the bit, n plug closing the inner end of the said tubular slmnk and acting as :L Stop to limit the outward movement of solo'. Shank, und a key carried by said'hanclle so as to engage thehelieel groove in said shank for the purpose described. Y

2. A soldering tool as specified in claim l7 comprising a inetel liner eeurecl in the said hollow` handle und forming :3. guide for the Sei/rl tubular shank. Y

A soldering tool as; Specified in claim l, comprising e tubulin' efteneion provided on the Said plow, end l1h-S`Ctrie Wires pa n iliroi 1 the ,Said tubular e-teneion lio toe Said bit.

In testimony whereof l here' Signed my naine to this Specification in the nfeienee of t vo subscribing Witnesses.

GEORGE HABER?.

lVitnesSes Lewis T. JoHNsnxo7 B. A. Nomine. 

